From patchwork Wed Feb 21 18:31:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13566096 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1226E85940; Wed, 21 Feb 2024 18:34:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708540500; cv=none; b=DliA4COkb/4qxSPjbjPy2U05F7Gy9zLIWZ27oNC5HKYFc3hf6i4wtyzI57ZFzwc/9s4R2nMFR4WmK3GDdZqcJgiAoaR/AJmfdF9P38W9ZneFE7THypvkJ4S3qIcwrZdiZZU9lxz7oEMlv0VmRro3uk6hIf/ncUt2uYRGyhsuX4Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708540500; c=relaxed/simple; bh=tmZdQU9N4IY5BcwLubSQEg1Rug6tt9UVDfRrfuekMhA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M4BvvYpq4mkh34oOIzCvtHjXlZtVdKcc50juZfDl6paVDeX6NgUHVCSIFqQ1WFw1VuYsC2PXDOBp2QOM4m6L85IeEC80iPdTBOAuS/Bp5dLghq9si4SjQ0jh8p+XYeIox7zwtb9GiZaWkMx0pEWDF6mfxp13oP6li0SZBeHSNkA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=jejBQQc+; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="jejBQQc+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708540499; x=1740076499; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tmZdQU9N4IY5BcwLubSQEg1Rug6tt9UVDfRrfuekMhA=; b=jejBQQc+bdmjIFcC479yeWf2YNHhg3ycWun96tcRPFZHvxe/O8NS2CIW GjBKto4qcvqP33GwJH539Z9dKb0CNJqqPCSPTYtTbcV58LVzfKT0Uk089 g7rhTFfAcy84Lg2rjdvyBMCXUYCKXUeEvvxB8VTOkLAwOX8tSDai84NHz pt/qtI2tcTh42m6P2TOyxB1jPtk9O7+cTlxr3xfJCrMAP66KEnRC+6XvH z4GV36kHH39ow31JUem0bVAR9sq0B3/akB/KDP4+NYY84NA4z+s485xnf 5Ss8R8igWb25kMnNGlFNDYgjWdk1ToDuYypqIKFF6EXtdDizjgKToy2Bm Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10991"; a="28164731" X-IronPort-AV: E=Sophos;i="6.06,176,1705392000"; d="scan'208";a="28164731" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2024 10:34:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10991"; a="936684742" X-IronPort-AV: E=Sophos;i="6.06,176,1705392000"; d="scan'208";a="936684742" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 21 Feb 2024 10:34:48 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id CCD9C34C; Wed, 21 Feb 2024 20:34:46 +0200 (EET) From: Andy Shevchenko To: Greg Kroah-Hartman , Andy Shevchenko , Thomas Gleixner , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-rpi-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-tegra@vger.kernel.org Cc: Jiri Slaby , Joel Stanley , Andrew Jeffery , Florian Fainelli , Ray Jui , Scott Branden , Broadcom internal kernel review list , Al Cooper , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Paul Cercueil , Vladimir Zapolskiy , Thierry Reding , Jonathan Hunter , Kunihiko Hayashi , Masami Hiramatsu Subject: [PATCH v1 02/14] serial: core: Add UPIO_UNSET constant for unset port type Date: Wed, 21 Feb 2024 20:31:18 +0200 Message-ID: <20240221183442.4124354-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1.gbec44491f096 In-Reply-To: <20240221183442.4124354-1-andriy.shevchenko@linux.intel.com> References: <20240221183442.4124354-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In some APIs we would like to assign the special value to iotype and compare against it in another places. Introduce UPIO_UNSET for this purpose. Note, we can't use 0, because it's a valid value for IO port access. Signed-off-by: Andy Shevchenko --- include/linux/serial_core.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 2d2ec99eca93..2b0526ae1fac 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -470,6 +470,7 @@ struct uart_port { unsigned char iotype; /* io access style */ +#define UPIO_UNSET ((unsigned char)~0U) /* UCHAR_MAX */ #define UPIO_PORT (SERIAL_IO_PORT) /* 8b I/O port access */ #define UPIO_HUB6 (SERIAL_IO_HUB6) /* Hub6 ISA card */ #define UPIO_MEM (SERIAL_IO_MEM) /* driver-specific */